Multilayer ceramic capacitor

Abstract

A multilayer ceramic capacitor includes an element body, a first terminal electrode, a second terminal electrode, a plurality of first internal electrode groups, and a plurality of second internal electrode groups. The plurality of first internal electrode groups each include a first number of first internal electrodes connected to the first terminal electrode and arranged in the first direction inside the element body. The plurality of second internal electrode groups each include a second number of second internal electrodes connected to the second terminal electrode and arranged in the first direction inside the element body. The first internal electrode groups and the second internal electrode groups are arranged alternately in the first direction. One of first internal electrodes included in each of the first internal electrode groups and one of second internal electrodes included in each of the second internal electrode groups are opposed to each other.

What is claimed is: 
     
       1. A multilayer ceramic capacitor, comprising:
 an element body including a dielectric; 
 a first terminal electrode and a second terminal electrode; and 
 a plurality of first internal electrode groups and a plurality of second internal electrode groups, 
 wherein the element body includes a first main surface, a second main surface, a first side surface, a second side surface, a third side surface, and a fourth side surface, 
 the first main surface and the second main surface extend in a first direction and a second direction intersecting the first direction, and are opposed to each other, 
 the first side surface and the second side surface extend in the second direction and in a third direction that is a direction in which the first main surface and the second main surface are opposed to each other to connect the first main surface and the second main surface, and are opposed to each other, and 
 the third side surface and the fourth side surface extend in the first direction and the third direction to connect between the first main surface and the second main surface, and are opposed to each other, 
 the first terminal electrode is arranged on the first main surface, 
 the second terminal electrode is arranged on the second main surface, 
 the plurality of first internal electrode groups each include a first number of first internal electrodes, and the first numbers of first internal electrodes are connected to the first terminal electrode and arranged in the first direction inside the element body, 
 the plurality of second internal electrode groups each include a second number of second internal electrodes, and the second numbers of second internal electrodes are connected to the second terminal electrode and arranged in the first direction inside the element body, 
 a length in the first direction of the element body is greater than a length in the third direction of the element body and is smaller than or equal to a length in the second direction of the element body, 
 a length in the second direction of the first internal electrodes is greater than a length in the third direction of the first internal electrodes, and a length in the second direction of the second internal electrodes is greater than a length in the third direction of the second internal electrodes, 
 the first number and the second number are different integers equal to or greater than 2, 
 intervals in the first direction between the first internal electrodes included in the first internal electrode groups, intervals in the first direction between the second internal electrodes included in the second internal electrode groups, and intervals in the first direction between the first internal electrodes included in the first internal electrode groups and the second internal electrodes included in the second internal electrode groups are all the same, and 
 the first internal electrode groups and the second internal electrode groups are arranged alternately in the first direction so that one of first internal electrodes included in each of the first internal electrode groups and one of second internal electrodes included in each of the second internal electrode groups are opposed to each other in the first direction. 
 
     
     
       2. A multilayer ceramic capacitor, comprising:
 an element body including a dielectric; 
 a first terminal electrode and a second terminal electrode; and 
 a plurality of first internal electrode groups, a plurality of second internal electrode groups, a plurality of third internal electrode groups, and a plurality of fourth internal electrode groups, 
 wherein the element body includes a first main surface, a second main surface, a first side surface, a second side surface, a third side surface, and a fourth side surface, 
 the first main surface and the second main surface extend in a first direction and a second direction intersecting the first direction, and are opposed to each other, 
 the first side surface and the second side surface extend in the second direction and in a third direction that is a direction in which the first main surface and the second main surface are opposed to each other to connect the first main surface and the second main surface, and are opposed to each other, 
 the third side surface and the fourth side surface extend in the first direction and the third direction to connect the first main surface and the second main surface, and are opposed to each other, 
 the first terminal electrode is arranged on the first main surface, 
 the second terminal electrode is arranged on the second main surface, 
 the plurality of first internal electrode groups each include a first number of first internal electrodes, and the first numbers of first internal electrodes are connected to the first terminal electrode and arranged in the first direction inside the element body, 
 the plurality of second internal electrode groups each include a first number of second internal electrodes, and the first numbers of second internal electrodes are connected to the second terminal electrode and arranged in the first direction inside the element body, 
 the plurality of third internal electrode groups each include a second number of first internal electrodes, and the second numbers of first internal electrodes are connected to the first terminal electrode and arranged in the first direction inside the element body, 
 the plurality of fourth internal electrode groups each include a second number of second internal electrodes, and the second numbers of second internal electrodes are connected to the second terminal electrode and arranged in the first direction inside the element body, 
 a length in the first direction of the element body is greater than a length in the third direction of the element body and is smaller than or equal to a length in the second direction of the element body, 
 a length in the second direction of the first internal electrode is greater than a length in the third direction of the first internal electrode, and a length in the second direction of the second internal electrode is greater than a length in the third direction of the second internal electrode, 
 the first number and the second number are different integers equal to or greater than 2, 
 the element body includes an inner portion, and a pair of outer portions located with the inner portion interposed therebetween in the first direction, 
 intervals in the first direction between the first internal electrodes included in the first internal electrode groups, intervals in the first direction between the second internal electrodes included in the second internal electrode groups, intervals in the first direction between the first internal electrodes included in the first internal electrode groups and the second internal electrodes included in the second internal electrode group, interval in the first direction between the first internal electrodes included in the third internal electrode groups, intervals in the first direction between the second internal electrodes included in the fourth internal electrode groups, and interval in the first direction between the first internal electrodes included in the third internal electrode groups and the second internal electrodes included in the fourth internal electrode groups are the same as one another, 
 the first internal electrode groups and the second internal electrode groups are located in the pair of outer portions, 
 one of first internal electrodes included in each of the first internal electrode groups and one of second internal electrodes included in each of the second internal electrode groups are arranged alternately in the first direction so as to be opposed to each other in the first direction, 
 the third internal electrode groups and the fourth internal electrode groups are located in the inner portion, and 
 one of first internal electrodes included in each of the third internal electrode groups and one of second internal electrodes included in each of the fourth internal electrode groups are arranged alternately in the first direction so as to be opposed to each other in the first direction. 
 
     
     
       3. The multilayer ceramic capacitor according to  claim 2 ,
 wherein the first number is at least one larger than the second number. 
 
     
     
       4. The multilayer ceramic capacitor according to  claim 2 ,
 wherein the second number is at least one larger than the first number. 
 
     
     
       5. The multilayer ceramic capacitor according to  claim 1 , further comprising:
 an adjustment electrode that is opposed to the first internal electrode located on the outermost layer in the first direction among the first number of first internal electrodes, and that is connected to the second terminal electrode and is not connected to the first terminal electrode. 
 
     
     
       6. The multilayer ceramic capacitor according to  claim 2 , further comprising:
 an adjustment electrode that is opposed to the first internal electrode located on the outermost layer in the first direction among the first number of first internal electrodes, and that is connected to the second terminal electrode and is not connected to the first terminal electrode.